Umlando Wokuthuthukiswa kwe-Silicon carbide crucible

Emkhakheni we-metallurgy, umlando wokukhiqiza we-Silicon carbide crucible esetshenziselwa ukuncibilikisa izinsimbi ezingenayo insimbi ungalandelelwa emuva kuma-1930s. Inqubo yayo eyinkimbinkimbi ihlanganisa ukuchotshozwa kwempahla eluhlaza, ukuhlanganisa, ukuphotha ngesandla noma ukwenza ama-roll, ukomisa, ukudubula, ukugcoba amafutha kanye nokuvimbela umswakama. Izithako ezisetshenziswayo zihlanganisa i-graphite, ubumba, i-pyrophyllite clinker noma i-high-alumina bauxite clinker, i-monosilica powder noma i-ferrosilicon powder kanye namanzi, exutshwe ngesilinganiso esithile. Ngokuhamba kwesikhathi, i-silicon carbide iye yahlanganiswa ukuze kuthuthukiswe ukuqhutshwa kokushisa nokuthuthukisa ikhwalithi. Kodwa-ke, le ndlela yendabuko isebenzisa amandla aphezulu, umjikelezo omude wokukhiqiza, nokulahlekelwa okukhulu kanye nokuguqulwa esigabeni somkhiqizo osuphelile.

Ngokuphambene, inqubo yanamuhla yokwenza i-crucible forming icindezela isostatic. Lobu buchwepheshe busebenzisa i-graphite-silicon carbide crucible, ene-phenolic resin, itiyela noma i-asphalt njenge-ejenti ebophayo, kanye ne-graphite ne-silicon carbide njengezinto zokusetshenziswa eziyinhloko. I-crucible ewumphumela ine-porosity ephansi, ukuminyana okuphezulu, ukuthungwa okufanayo kanye nokumelana nokugqwala okuqinile. Naphezu kwalezi zinzuzo, inqubo yokuvutha ikhipha intuthu eyingozi nothuli, okubangela ukungcoliswa kwemvelo.

Ukuvela kokukhiqizwa kwe-Silicon carbide crucible kukhombisa ukuphishekela okuqhubekayo kwemboni ukusebenza kahle, ikhwalithi kanye nesibopho semvelo. Njengoba ubuchwepheshe buthuthuka, kugxilwe ekuthuthukiseni izindlela zokunciphisa ukusetshenziswa kwamandla, ukunciphisa umjikelezo wokukhiqiza kanye nokunciphisa umthelela wendawo. Abakhiqizi be-crucible bahlola izinto ezintsha nezinqubo zokufeza lezi zinhloso, okuhloswe ngazo ukulinganisa phakathi kwesiko nesimanje. Njengoba isidingo sokuncibilikiswa kwensimbi okungeyona insimbi siqhubeka sikhula, ukuthuthukiswa kokukhiqizwa kwe-crucible kuzodlala indima ebalulekile ekulolongeni ikusasa le-metallurgy.